-
公开(公告)号：US20170374598A1
公开(公告)日：2017-12-28
申请号：US15640871
申请日：2017-07-03
Applicant: Apple Inc.
Inventor： Ajoy Singh , Tarik Tabet , Wen Zhao , Aon Mujtaba , Christian W. Mucke
CPC classification number: H04W36/32 , H04W36/0033
Abstract: A wireless communication system is presented for robust mobility management in a HetNet communication system. A source cell can prepare a macro cell and a target small cell as handover candidates during handover decision making and/or preparation. The mobile device is informed about the prepared macro cell and target small cell using radio resource control (RRC) messaging. After receiving a handover command or detecting radio frequency (RF) loss, the mobile device can try to connect with the target small cell. If the mobile device is unable to connect to the target small cell, the UE can fall back and connect to the macro cell.
-
公开(公告)号：US20170339681A1
公开(公告)日：2017-11-23
申请号：US15598470
申请日：2017-05-18
Applicant: Apple Inc.
Inventor： Awais M. Hussain , Tarik Tabet , Lydi Smaini , Moustafa M. Elsayed
IPC: H04W72/04 , H04B7/0452
CPC classification number: H04L1/0038 , H04L1/0045 , H04L5/0053 , H04L5/0092
Abstract: A user equipment device (UE) may communicate according to a new device category satisfying specified QoS (quality of service) requirements while also satisfying specified link budget requirements, and additional optimization requirements. The UE may use physical channels and procedures (e.g. it may receive and decode control channels) in a manner compatible with and not infringing on the operation of other UEs operating in the same network, while allowing the network more flexibility to assign resources. Specifically, resources for EPDCCH on UE-specific SS and EPDCCH on common SS may be shared. That is, the resources for two search spaces may be overlaid partially or in full, giving the network more flexibility in allocating resources. Furthermore the DCI formats for MPDCCH may be extended to devices operating according to the new device category, which enables the coverage enhancement of MTC for these devices.
-
公开(公告)号：US09826559B2
公开(公告)日：2017-11-21
申请号：US15143739
申请日：2016-05-02
Applicant: Apple Inc.
Inventor： Sarma V. Vangala , David Boettger , Vijay Kumar Ramamurthi , Venkateswara Rao Manepalli , Srinivas Pasupuleti , Swaminathan Balakrishnan , Samy Khay-Ibbat , Tarik Tabet
CPC classification number: H04W76/02 , H04W28/02 , H04W28/20 , H04W52/0209 , H04W72/1252 , H04W76/10 , H04W76/18 , H04W76/28 , Y02D70/1222 , Y02D70/1242 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/164 , Y02D70/168 , Y02D70/22 , Y02D70/24 , Y02D70/26
Abstract: This disclosure relates to techniques for UEs (including link budget limited UEs) to improve communications performance with a cellular network. A UE may be configured to provide a request (for a first process executed by the UE) for a high-bandwidth connection to a base station of a cellular network during a first RRC connection. In some embodiments, the RRC connection is established by another process. In some embodiments, the UE is configured to receive signaling from the base station indicating that the base station cannot satisfy the high-bandwidth connection request and the UE is configured not to send or receive data for the high-bandwidth connection during the first RRC connection in response to the signaling. In some embodiments, the UE is configured to re-send the request on a second, subsequent RRC connection that is not established by the first process. In some embodiments, the UE is configured to opportunistically re-send the request on subsequent RRC connections established by one or more other processes until the base station is able to grant the request.
-
公开(公告)号：US09825748B2
公开(公告)日：2017-11-21
申请号：US14502391
申请日：2014-09-30
Applicant: Apple Inc.
Inventor： Huarui Liang , Tarik Tabet , Farouk Belghoul , Dawei Zhang
CPC classification number: H04L5/0073 , H04B1/715 , H04B2001/7154 , H04L5/001 , H04L5/0012 , H04L27/0006 , H04W16/14 , H04W28/085 , H04W72/0453 , H04W84/12
Abstract: Apparatus and methods for managing use of radio frequency channels in unlicensed radio frequency bands by a wireless communication device in communication with a cellular wireless network are disclosed. The wireless communication device obtains, from an eNodeB of the wireless network, one or more access network discovery and selection function (ANDSF) policies that include rules for mobility of the wireless communication device and offloading of traffic for the wireless communication device to radio frequency channels in an unlicensed radio frequency band. The wireless communication device determines when at least one radio frequency channel in the unlicensed radio frequency band is available for offloading traffic, for network selection, for network re-selection, or for a supplemental connection via carrier aggregation based on the ANDSF policies, measured interference levels, and/or loading information provided by the eNodeB.
-
公开(公告)号：US09820239B2
公开(公告)日：2017-11-14
申请号：US14445963
申请日：2014-07-29
Applicant: Apple Inc.
Inventor： Tarik Tabet , Konstantinos Sarrigeorgidis , S. Aon Mujtaba
CPC classification number: H04W52/24 , H04L1/0041 , H04L1/0042 , H04L5/0023 , H04L5/0046 , H04L5/0048 , H04L5/006 , H04L5/0092 , H04L27/2626 , H04L27/3405 , H04W52/346
Abstract: Power allocation for encoded bits in OFDM systems. OFDM symbol subcarriers may be allocated to a wireless user equipment (UE) device by a base station. A first portion of the allocated subcarriers may include systematic bits and a second portion of the allocated subcarriers may include parity bits according to a coding scheme. Transmit power may be unevenly allocated to the subcarriers allocated to the UE, such that subcarriers including systematic bits are allocated different power than the subcarriers including parity bits. The OFDM symbols including the subcarriers allocated to the UE may be transmitted to the UE by the base station according to the allocated power distribution.
-
Patent Agency Ranking
公开(公告)号：US09813916B2
公开(公告)日：2017-11-07
申请号：US15384652
申请日：2016-12-20
Applicant: Apple Inc.
Inventor： Tarik Tabet , Dawei Zhang , Wen Zhao
CPC classification number: H04W16/14 , H04L5/001 , H04W72/0453 , H04W72/085
Abstract: Carrier aggregation using unlicensed frequency bands. A primary carrier for communication between a base station (BS) and a wireless user equipment (UE) device may be configured according to a first wireless communication technology. The primary carrier may be on a licensed frequency band. A secondary carrier for communication between the BS and the UE may also be configured according to a first wireless communication technology. The secondary carrier may be on an unlicensed frequency band. Channel conditions for each of multiple possible channels of the unlicensed frequency band may be assessed according to a second wireless communication technology as part of configuring the secondary carrier.
-
公开(公告)号：US09806874B2
公开(公告)日：2017-10-31
申请号：US14690632
申请日：2015-04-20
Applicant: Apple Inc.
Inventor： Dawei Zhang , Tarik Tabet , Farouk Belghoul , Huarui Liang
CPC classification number: H04L5/14 , H04L5/0005 , H04L5/0028 , H04L5/003 , H04L27/368 , H04W72/0453 , H04W76/14
Abstract: Mobile devices, base stations, and/or relay stations may implement methods for decreasing required guard bands while also minimizing Adjacent Channel Leakage Ratio, when multiple mobile devices communicate over different respective adjacent specified frequency bands. For communications over at least one specified frequency band of the different respective adjacent frequency bands, a first bandwidth of uplink communications and/or a second bandwidth of downlink communications may be adjusted to differ from each other, and/or a communications bandwidth within the specified frequency band may be adjusted to be of a first size during a first portion of a specified data transmission period and to be of a second size during a second portion of the specified data transmission period, when at least some of the communications over the specified frequency band take place at frequencies adjacent to frequencies at which at least some of the communications take place over another specified frequency band.
-
公开(公告)号：US09794885B2
公开(公告)日：2017-10-17
申请号：US14326771
申请日：2014-07-09
Applicant: Apple Inc.
Inventor： Syed Aon Mujtaba , Moustafa M. Elsayed , Tarik Tabet
CPC classification number: H04W52/0251 , H04L25/00 , H04W52/0258 , H04W72/042 , H04W76/28 , Y02D70/122 , Y02D70/1242 , Y02D70/1262 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/168 , Y02D70/23 , Y02D70/24 , Y02D70/26
Abstract: Providing a power-saving mode for control channel monitoring in discontinuous reception (DRX) scenarios. Upon waking from a sleep mode at the conclusion of a DRX off period, a baseband modem may transition to a low-power mode configured to receive and decode only a control channel, such as a physical downlink control channel (PDCCH). If the control channel indicates during a DRX on period that communication traffic will be transmitted to the baseband modem, then the baseband modem may transition to a full-power mode to receive the communication traffic. Otherwise, the baseband modem may transition back to the sleep mode. The low-power mode may be implemented by a dedicated set of hardware configured to draw less power than a full set of hardware configured to implement the high-power mode.
-
419.发明申请公开(公告)号：US20170265211A1
公开(公告)日：2017-09-14
申请号：US15260349
申请日：2016-09-09
Applicant: Apple Inc.
Inventor： Moustafa M. Elsayed , Tarik Tabet
IPC: H04W72/12 , H04L12/861
CPC classification number: H04W72/1205 , H04L49/90 , H04W52/0216 , H04W52/0261 , H04W72/1289 , H04W84/042 , Y02D70/1242 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/164 , Y02D70/166 , Y02D70/168 , Y02D70/23 , Y02D70/24 , Y02D70/26
Abstract: This disclosure relates to synchronization and interprocessor communication techniques in an improved system architecture for a cellular modem. According to some embodiments, a wireless device may include a control module, a downlink module, and an uplink module. The control module may decode control information to determine whether uplink or downlink activities are scheduled. If any uplink or downlink activities are scheduled, the control module may activate one or both of the uplink module or the downlink module to perform the scheduled activities. If no downlink activities are scheduled, the downlink module may not be activated by the control module, and may remain asleep until a later time when downlink activities are scheduled. Likewise, if no uplink activities are scheduled, the uplink module may not be activated by the control module, and may remain asleep until a later time when uplink activities are scheduled.
-
公开(公告)号：US20170265136A1
公开(公告)日：2017-09-14
申请号：US15274970
申请日：2016-09-23
Applicant: Apple Inc.
Inventor： Moustafa M. Elsayed , Tarik Tabet
CPC classification number: H04W52/0229 , H04W68/00 , H04W76/28 , Y02D70/1224 , Y02D70/1242 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/164 , Y02D70/168 , Y02D70/24 , Y02D70/26
Abstract: A wireless communication device (UE) may include a paging subsystem that performs paging-monitoring as part of wireless communications of the wireless communication device. The UE may place wireless communication system resources not required during paging-monitoring into either a low-power state or a power-down state, and those system resources may remain in one of those respective states during paging-monitoring. The wireless communication system resources not required during the paging-monitoring may include at least a wireless communications protocol stack used during the wireless communications of the UE, and at least system resources used for performing uplink related tasks independently of wireless communication system resources used for performing downlink related tasks. The paging subsystem may include at least a control manager subsystem capable of decoding a physical downlink control channel, a downlink control subsystem capable of performing tasks related to a physical downlink data channel, and a message parser for parsing paging messages.
-
-
-
-
-
-
-
-
-
Search Results
465
records
(took 0.049 seconds)
